yep module 6 is pretty fine i think i finished module 5 and 6 during term 4 maybe January holidays and then 7 and 8 in April holidays i don't remember lmao but yeah it's pretty easy to get content done and honestly super beneficial
as for how long it depends how many hours per day/week you're willing to spend but shouldn't take too long to finish content, maybe a week or so, and then calculation spam